Inventions of the 1920s and 1930s Many inventions were created during the 1920s that altered human civilization. Transportation was successfully mastered. Radio communication was becoming more common, and medicine was saving more and more lives every day. In this year Henry Ford created the first economical combustion engine automobile called the Model-T. The creation of the Model T changed the life of every American. Vehicles were seen as a means of freedom and excitement. Soon after, every American family had a car. The demand for vehicles has given birth to an entirely new industry, creating jobs, increased revenue, and improving the American economy in every way. With so many vehicles on the roads, the roads had to get bigger and better, which gave rise to nationwide road construction. This also created more jobs and further strengthened the economy. (Inventions: Automobile)The airplane was first invented in 1903; it amazed everyone but never really took off because of how dangerous it still was. They used planes in World War I but threw them aside. After World War I (around the mid 1920s) the federal government came up with the idea of ​​air mail. This was readily accepted; instead of receiving the mail in two weeks it would only take a couple of days. Soon after, passenger transportation quickly caught on, even though only upper-class people could afford it, and it soon became accessible to almost everyone. (Inventions: airplane)1879 were the first radios...